[Openal] openAL threading issues?

[Daniel PEACOCK]

Hi,

I don't see any reason why this shouldn't work.    Which OpenAL device are
you opening?  You can find this out by calling alcGetString(deviceID,
ALC_DEVICE_SPECIFIER) after the call to alcOpenDevice(NULL).   Do you have
up-to-date OpenAL components and soundcard drivers?

Dan

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             uray meiviar                                                  
             <uraymeiviar at yaho                                             
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                                       [Openal] openAL threading issues?   
                                                                           
             06/06/2007 07:13                                              
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consider the following codes :

ALuint source        = 0;
ALint  sourceState   = 0;
bit isrun = false;

DWORD WINAPI althread(LPVOID params)
{
    while( isrun ) {
        alGetSourcei( source, AL_SOURCE_STATE, &sourceState);
        if(sourceState != AL_PLAYING) {
            alSourcePlay( source );
        }
    }
    return 0;
}

void main(void)
{
    // -------- as usual rituals :
    // alcOpenDevice(NULL);
    // alcCreateContext(..)
    // alcMakeContextCurrent(..)
    // alGenBuffers(..)
    // loadWAV()
    // alBufferData(..)
    // alGenSources(..)
    // alSourcei(..,AL_BUFFER,..)

    isrun = true;
    HANDLE thread = CreateThread(NULL,0,althread,NULL,0,NULL);
    _getch();
    isrun = false;
    WaitForSingleObject(thread,INFINITE);

    // alSourceStop(..)
    // alSourcei( .., AL_BUFFER, NULL )
    // alDeleteSources(..)
    // alDeleteBuffers(..)
    // alcMakeContextCurrent(NULL)
    // alcDestroyContext(..)
    // alcCloseDevice(..)
}

sometimes the sound is played and sometime not, but no errors returned from
all AL calls, i don't know if it is openAL threading issues or what,
because if don't call openAL func. in different thread the sound is always
played. what's wrong?

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